GH-96793: Change `FOR_ITER` to not pop the iterator on exhaustion. (GH-96801)

Change FOR_ITER to have the same stack effect regardless of whether it branches or not.
Performance is unchanged as FOR_ITER (and specialized forms jump over the cleanup code).

2 files changed, 93 insertions, 92 deletions

diff --git a/Include/internal/pycore_opcode.h b/Include/internal/pycore_opcode.h
index c8ef5dd..33617b4 100644
--- a/Include/internal/pycore_opcode.h
+++ b/Include/internal/pycore_opcode.h
@@ -122,6 +122,7 @@ const uint8_t _PyOpcode_Deopt[256] = {
     [DICT_MERGE] = DICT_MERGE,
     [DICT_UPDATE] = DICT_UPDATE,
     [END_ASYNC_FOR] = END_ASYNC_FOR,
+    [END_FOR] = END_FOR,
     [EXTENDED_ARG] = EXTENDED_ARG,
     [EXTENDED_ARG_QUICK] = EXTENDED_ARG,
     [FORMAT_VALUE] = FORMAT_VALUE,
@@ -244,18 +245,19 @@ static const char *const _PyOpcode_OpName[263] = {
     [POP_TOP] = "POP_TOP",
     [PUSH_NULL] = "PUSH_NULL",
     [BINARY_OP_ADAPTIVE] = "BINARY_OP_ADAPTIVE",
+    [END_FOR] = "END_FOR",
     [BINARY_OP_ADD_FLOAT] = "BINARY_OP_ADD_FLOAT",
     [BINARY_OP_ADD_INT] = "BINARY_OP_ADD_INT",
     [BINARY_OP_ADD_UNICODE] = "BINARY_OP_ADD_UNICODE",
     [BINARY_OP_INPLACE_ADD_UNICODE] = "BINARY_OP_INPLACE_ADD_UNICODE",
-    [BINARY_OP_MULTIPLY_FLOAT] = "BINARY_OP_MULTIPLY_FLOAT",
     [NOP] = "NOP",
     [UNARY_POSITIVE] = "UNARY_POSITIVE",
     [UNARY_NEGATIVE] = "UNARY_NEGATIVE",
     [UNARY_NOT] = "UNARY_NOT",
+    [BINARY_OP_MULTIPLY_FLOAT] = "BINARY_OP_MULTIPLY_FLOAT",
     [BINARY_OP_MULTIPLY_INT] = "BINARY_OP_MULTIPLY_INT",
-    [BINARY_OP_SUBTRACT_FLOAT] = "BINARY_OP_SUBTRACT_FLOAT",
     [UNARY_INVERT] = "UNARY_INVERT",
+    [BINARY_OP_SUBTRACT_FLOAT] = "BINARY_OP_SUBTRACT_FLOAT",
     [BINARY_OP_SUBTRACT_INT] = "BINARY_OP_SUBTRACT_INT",
     [BINARY_SUBSCR_ADAPTIVE] = "BINARY_SUBSCR_ADAPTIVE",
     [BINARY_SUBSCR_DICT] = "BINARY_SUBSCR_DICT",
@@ -264,20 +266,20 @@ static const char *const _PyOpcode_OpName[263] = {
     [BINARY_SUBSCR_TUPLE_INT] = "BINARY_SUBSCR_TUPLE_INT",
     [CALL_ADAPTIVE] = "CALL_ADAPTIVE",
     [CALL_PY_EXACT_ARGS] = "CALL_PY_EXACT_ARGS",
-    [CALL_PY_WITH_DEFAULTS] = "CALL_PY_WITH_DEFAULTS",
     [BINARY_SUBSCR] = "BINARY_SUBSCR",
     [BINARY_SLICE] = "BINARY_SLICE",
     [STORE_SLICE] = "STORE_SLICE",
+    [CALL_PY_WITH_DEFAULTS] = "CALL_PY_WITH_DEFAULTS",
     [CALL_BOUND_METHOD_EXACT_ARGS] = "CALL_BOUND_METHOD_EXACT_ARGS",
-    [CALL_BUILTIN_CLASS] = "CALL_BUILTIN_CLASS",
     [GET_LEN] = "GET_LEN",
     [MATCH_MAPPING] = "MATCH_MAPPING",
     [MATCH_SEQUENCE] = "MATCH_SEQUENCE",
     [MATCH_KEYS] = "MATCH_KEYS",
-    [CALL_BUILTIN_FAST_WITH_KEYWORDS] = "CALL_BUILTIN_FAST_WITH_KEYWORDS",
+    [CALL_BUILTIN_CLASS] = "CALL_BUILTIN_CLASS",
     [PUSH_EXC_INFO] = "PUSH_EXC_INFO",
     [CHECK_EXC_MATCH] = "CHECK_EXC_MATCH",
     [CHECK_EG_MATCH] = "CHECK_EG_MATCH",
+    [CALL_BUILTIN_FAST_WITH_KEYWORDS] = "CALL_BUILTIN_FAST_WITH_KEYWORDS",
     [CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS] = "CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS",
     [CALL_NO_KW_BUILTIN_FAST] = "CALL_NO_KW_BUILTIN_FAST",
     [CALL_NO_KW_BUILTIN_O] = "CALL_NO_KW_BUILTIN_O",
@@ -288,7 +290,6 @@ static const char *const _PyOpcode_OpName[263] = {
     [CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS] = "CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS",
     [CALL_NO_KW_METHOD_DESCRIPTOR_O] = "CALL_NO_KW_METHOD_DESCRIPTOR_O",
     [CALL_NO_KW_STR_1] = "CALL_NO_KW_STR_1",
-    [CALL_NO_KW_TUPLE_1] = "CALL_NO_KW_TUPLE_1",
     [WITH_EXCEPT_START] = "WITH_EXCEPT_START",
     [GET_AITER] = "GET_AITER",
     [GET_ANEXT] = "GET_ANEXT",
@@ -296,37 +297,37 @@ static const char *const _PyOpcode_OpName[263] = {
     [BEFORE_WITH] = "BEFORE_WITH",
     [END_ASYNC_FOR] = "END_ASYNC_FOR",
     [CLEANUP_THROW] = "CLEANUP_THROW",
+    [CALL_NO_KW_TUPLE_1] = "CALL_NO_KW_TUPLE_1",
     [CALL_NO_KW_TYPE_1] = "CALL_NO_KW_TYPE_1",
     [COMPARE_OP_ADAPTIVE] = "COMPARE_OP_ADAPTIVE",
     [COMPARE_OP_FLOAT_JUMP] = "COMPARE_OP_FLOAT_JUMP",
-    [COMPARE_OP_INT_JUMP] = "COMPARE_OP_INT_JUMP",
     [STORE_SUBSCR] = "STORE_SUBSCR",
     [DELETE_SUBSCR] = "DELETE_SUBSCR",
+    [COMPARE_OP_INT_JUMP] = "COMPARE_OP_INT_JUMP",
     [COMPARE_OP_STR_JUMP] = "COMPARE_OP_STR_JUMP",
     [EXTENDED_ARG_QUICK] = "EXTENDED_ARG_QUICK",
     [FOR_ITER_ADAPTIVE] = "FOR_ITER_ADAPTIVE",
     [FOR_ITER_LIST] = "FOR_ITER_LIST",
     [FOR_ITER_RANGE] = "FOR_ITER_RANGE",
-    [JUMP_BACKWARD_QUICK] = "JUMP_BACKWARD_QUICK",
     [GET_ITER] = "GET_ITER",
     [GET_YIELD_FROM_ITER] = "GET_YIELD_FROM_ITER",
     [PRINT_EXPR] = "PRINT_EXPR",
     [LOAD_BUILD_CLASS] = "LOAD_BUILD_CLASS",
+    [JUMP_BACKWARD_QUICK] = "JUMP_BACKWARD_QUICK",
     [LOAD_ATTR_ADAPTIVE] = "LOAD_ATTR_ADAPTIVE",
-    [LOAD_ATTR_CLASS] = "LOAD_ATTR_CLASS",
     [LOAD_ASSERTION_ERROR] = "LOAD_ASSERTION_ERROR",
     [RETURN_GENERATOR] = "RETURN_GENERATOR",
+    [LOAD_ATTR_CLASS] = "LOAD_ATTR_CLASS",
     [LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN] = "LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN",
     [LOAD_ATTR_INSTANCE_VALUE] = "LOAD_ATTR_INSTANCE_VALUE",
     [LOAD_ATTR_MODULE] = "LOAD_ATTR_MODULE",
     [LOAD_ATTR_PROPERTY] = "LOAD_ATTR_PROPERTY",
     [LOAD_ATTR_SLOT] = "LOAD_ATTR_SLOT",
-    [LOAD_ATTR_WITH_HINT] = "LOAD_ATTR_WITH_HINT",
     [LIST_TO_TUPLE] = "LIST_TO_TUPLE",
     [RETURN_VALUE] = "RETURN_VALUE",
     [IMPORT_STAR] = "IMPORT_STAR",
     [SETUP_ANNOTATIONS] = "SETUP_ANNOTATIONS",
-    [LOAD_ATTR_METHOD_LAZY_DICT] = "LOAD_ATTR_METHOD_LAZY_DICT",
+    [LOAD_ATTR_WITH_HINT] = "LOAD_ATTR_WITH_HINT",
     [ASYNC_GEN_WRAP] = "ASYNC_GEN_WRAP",
     [PREP_RERAISE_STAR] = "PREP_RERAISE_STAR",
     [POP_EXCEPT] = "POP_EXCEPT",
@@ -353,7 +354,7 @@ static const char *const _PyOpcode_OpName[263] = {
     [JUMP_FORWARD] = "JUMP_FORWARD",
     [JUMP_IF_FALSE_OR_POP] = "JUMP_IF_FALSE_OR_POP",
     [JUMP_IF_TRUE_OR_POP] = "JUMP_IF_TRUE_OR_POP",
-    [LOAD_ATTR_METHOD_NO_DICT] = "LOAD_ATTR_METHOD_NO_DICT",
+    [LOAD_ATTR_METHOD_LAZY_DICT] = "LOAD_ATTR_METHOD_LAZY_DICT",
     [POP_JUMP_IF_FALSE] = "POP_JUMP_IF_FALSE",
     [POP_JUMP_IF_TRUE] = "POP_JUMP_IF_TRUE",
     [LOAD_GLOBAL] = "LOAD_GLOBAL",
@@ -361,7 +362,7 @@ static const char *const _PyOpcode_OpName[263] = {
     [CONTAINS_OP] = "CONTAINS_OP",
     [RERAISE] = "RERAISE",
     [COPY] = "COPY",
-    [LOAD_ATTR_METHOD_WITH_DICT] = "LOAD_ATTR_METHOD_WITH_DICT",
+    [LOAD_ATTR_METHOD_NO_DICT] = "LOAD_ATTR_METHOD_NO_DICT",
     [BINARY_OP] = "BINARY_OP",
     [SEND] = "SEND",
     [LOAD_FAST] = "LOAD_FAST",
@@ -381,9 +382,9 @@ static const char *const _PyOpcode_OpName[263] = {
     [STORE_DEREF] = "STORE_DEREF",
     [DELETE_DEREF] = "DELETE_DEREF",
     [JUMP_BACKWARD] = "JUMP_BACKWARD",
-    [LOAD_ATTR_METHOD_WITH_VALUES] = "LOAD_ATTR_METHOD_WITH_VALUES",
+    [LOAD_ATTR_METHOD_WITH_DICT] = "LOAD_ATTR_METHOD_WITH_DICT",
     [CALL_FUNCTION_EX] = "CALL_FUNCTION_EX",
-    [LOAD_CONST__LOAD_FAST] = "LOAD_CONST__LOAD_FAST",
+    [LOAD_ATTR_METHOD_WITH_VALUES] = "LOAD_ATTR_METHOD_WITH_VALUES",
     [EXTENDED_ARG] = "EXTENDED_ARG",
     [LIST_APPEND] = "LIST_APPEND",
     [SET_ADD] = "SET_ADD",
@@ -393,26 +394,27 @@ static const char *const _PyOpcode_OpName[263] = {
     [YIELD_VALUE] = "YIELD_VALUE",
     [RESUME] = "RESUME",
     [MATCH_CLASS] = "MATCH_CLASS",
+    [LOAD_CONST__LOAD_FAST] = "LOAD_CONST__LOAD_FAST",
     [LOAD_FAST__LOAD_CONST] = "LOAD_FAST__LOAD_CONST",
-    [LOAD_FAST__LOAD_FAST] = "LOAD_FAST__LOAD_FAST",
     [FORMAT_VALUE] = "FORMAT_VALUE",
     [BUILD_CONST_KEY_MAP] = "BUILD_CONST_KEY_MAP",
     [BUILD_STRING] = "BUILD_STRING",
+    [LOAD_FAST__LOAD_FAST] = "LOAD_FAST__LOAD_FAST",
     [LOAD_GLOBAL_ADAPTIVE] = "LOAD_GLOBAL_ADAPTIVE",
     [LOAD_GLOBAL_BUILTIN] = "LOAD_GLOBAL_BUILTIN",
     [LOAD_GLOBAL_MODULE] = "LOAD_GLOBAL_MODULE",
-    [RESUME_QUICK] = "RESUME_QUICK",
     [LIST_EXTEND] = "LIST_EXTEND",
     [SET_UPDATE] = "SET_UPDATE",
     [DICT_MERGE] = "DICT_MERGE",
     [DICT_UPDATE] = "DICT_UPDATE",
+    [RESUME_QUICK] = "RESUME_QUICK",
     [STORE_ATTR_ADAPTIVE] = "STORE_ATTR_ADAPTIVE",
     [STORE_ATTR_INSTANCE_VALUE] = "STORE_ATTR_INSTANCE_VALUE",
     [STORE_ATTR_SLOT] = "STORE_ATTR_SLOT",
     [STORE_ATTR_WITH_HINT] = "STORE_ATTR_WITH_HINT",
-    [STORE_FAST__LOAD_FAST] = "STORE_FAST__LOAD_FAST",
     [CALL] = "CALL",
     [KW_NAMES] = "KW_NAMES",
+    [STORE_FAST__LOAD_FAST] = "STORE_FAST__LOAD_FAST",
     [STORE_FAST__STORE_FAST] = "STORE_FAST__STORE_FAST",
     [STORE_SUBSCR_ADAPTIVE] = "STORE_SUBSCR_ADAPTIVE",
     [STORE_SUBSCR_DICT] = "STORE_SUBSCR_DICT",
@@ -421,7 +423,6 @@ static const char *const _PyOpcode_OpName[263] = {
     [UNPACK_SEQUENCE_LIST] = "UNPACK_SEQUENCE_LIST",
     [UNPACK_SEQUENCE_TUPLE] = "UNPACK_SEQUENCE_TUPLE",
     [UNPACK_SEQUENCE_TWO_TUPLE] = "UNPACK_SEQUENCE_TWO_TUPLE",
-    [181] = "<181>",
     [182] = "<182>",
     [183] = "<183>",
     [184] = "<184>",
@@ -507,7 +508,6 @@ static const char *const _PyOpcode_OpName[263] = {
 #endif
 
 #define EXTRA_CASES \
-    case 181: \
     case 182: \
     case 183: \
     case 184: \
diff --git a/Include/opcode.h b/Include/opcode.h
index 0871eb1..9b9414c 100644
--- a/Include/opcode.h
+++ b/Include/opcode.h
@@ -11,6 +11,7 @@ extern "C" {
 #define CACHE                                    0
 #define POP_TOP                                  1
 #define PUSH_NULL                                2
+#define END_FOR                                  4
 #define NOP                                      9
 #define UNARY_POSITIVE                          10
 #define UNARY_NEGATIVE                          11
@@ -127,78 +128,78 @@ extern "C" {
 #define LOAD_METHOD                            262
 #define MAX_PSEUDO_OPCODE                      262
 #define BINARY_OP_ADAPTIVE                       3
-#define BINARY_OP_ADD_FLOAT                      4
-#define BINARY_OP_ADD_INT                        5
-#define BINARY_OP_ADD_UNICODE                    6
-#define BINARY_OP_INPLACE_ADD_UNICODE            7
-#define BINARY_OP_MULTIPLY_FLOAT                 8
-#define BINARY_OP_MULTIPLY_INT                  13
-#define BINARY_OP_SUBTRACT_FLOAT                14
-#define BINARY_OP_SUBTRACT_INT                  16
-#define BINARY_SUBSCR_ADAPTIVE                  17
-#define BINARY_SUBSCR_DICT                      18
-#define BINARY_SUBSCR_GETITEM                   19
-#define BINARY_SUBSCR_LIST_INT                  20
-#define BINARY_SUBSCR_TUPLE_INT                 21
-#define CALL_ADAPTIVE                           22
-#define CALL_PY_EXACT_ARGS                      23
-#define CALL_PY_WITH_DEFAULTS                   24
-#define CALL_BOUND_METHOD_EXACT_ARGS            28
-#define CALL_BUILTIN_CLASS                      29
-#define CALL_BUILTIN_FAST_WITH_KEYWORDS         34
-#define CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS  38
-#define CALL_NO_KW_BUILTIN_FAST                 39
-#define CALL_NO_KW_BUILTIN_O                    40
-#define CALL_NO_KW_ISINSTANCE                   41
-#define CALL_NO_KW_LEN                          42
-#define CALL_NO_KW_LIST_APPEND                  43
-#define CALL_NO_KW_METHOD_DESCRIPTOR_FAST       44
-#define CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS     45
-#define CALL_NO_KW_METHOD_DESCRIPTOR_O          46
-#define CALL_NO_KW_STR_1                        47
-#define CALL_NO_KW_TUPLE_1                      48
-#define CALL_NO_KW_TYPE_1                       56
-#define COMPARE_OP_ADAPTIVE                     57
-#define COMPARE_OP_FLOAT_JUMP                   58
-#define COMPARE_OP_INT_JUMP                     59
-#define COMPARE_OP_STR_JUMP                     62
-#define EXTENDED_ARG_QUICK                      63
-#define FOR_ITER_ADAPTIVE                       64
-#define FOR_ITER_LIST                           65
-#define FOR_ITER_RANGE                          66
-#define JUMP_BACKWARD_QUICK                     67
-#define LOAD_ATTR_ADAPTIVE                      72
-#define LOAD_ATTR_CLASS                         73
-#define LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN       76
-#define LOAD_ATTR_INSTANCE_VALUE                77
-#define LOAD_ATTR_MODULE                        78
-#define LOAD_ATTR_PROPERTY                      79
-#define LOAD_ATTR_SLOT                          80
-#define LOAD_ATTR_WITH_HINT                     81
-#define LOAD_ATTR_METHOD_LAZY_DICT              86
-#define LOAD_ATTR_METHOD_NO_DICT               113
-#define LOAD_ATTR_METHOD_WITH_DICT             121
-#define LOAD_ATTR_METHOD_WITH_VALUES           141
-#define LOAD_CONST__LOAD_FAST                  143
-#define LOAD_FAST__LOAD_CONST                  153
-#define LOAD_FAST__LOAD_FAST                   154
-#define LOAD_GLOBAL_ADAPTIVE                   158
-#define LOAD_GLOBAL_BUILTIN                    159
-#define LOAD_GLOBAL_MODULE                     160
-#define RESUME_QUICK                           161
-#define STORE_ATTR_ADAPTIVE                    166
-#define STORE_ATTR_INSTANCE_VALUE              167
-#define STORE_ATTR_SLOT                        168
-#define STORE_ATTR_WITH_HINT                   169
-#define STORE_FAST__LOAD_FAST                  170
-#define STORE_FAST__STORE_FAST                 173
-#define STORE_SUBSCR_ADAPTIVE                  174
-#define STORE_SUBSCR_DICT                      175
-#define STORE_SUBSCR_LIST_INT                  176
-#define UNPACK_SEQUENCE_ADAPTIVE               177
-#define UNPACK_SEQUENCE_LIST                   178
-#define UNPACK_SEQUENCE_TUPLE                  179
-#define UNPACK_SEQUENCE_TWO_TUPLE              180
+#define BINARY_OP_ADD_FLOAT                      5
+#define BINARY_OP_ADD_INT                        6
+#define BINARY_OP_ADD_UNICODE                    7
+#define BINARY_OP_INPLACE_ADD_UNICODE            8
+#define BINARY_OP_MULTIPLY_FLOAT                13
+#define BINARY_OP_MULTIPLY_INT                  14
+#define BINARY_OP_SUBTRACT_FLOAT                16
+#define BINARY_OP_SUBTRACT_INT                  17
+#define BINARY_SUBSCR_ADAPTIVE                  18
+#define BINARY_SUBSCR_DICT                      19
+#define BINARY_SUBSCR_GETITEM                   20
+#define BINARY_SUBSCR_LIST_INT                  21
+#define BINARY_SUBSCR_TUPLE_INT                 22
+#define CALL_ADAPTIVE                           23
+#define CALL_PY_EXACT_ARGS                      24
+#define CALL_PY_WITH_DEFAULTS                   28
+#define CALL_BOUND_METHOD_EXACT_ARGS            29
+#define CALL_BUILTIN_CLASS                      34
+#define CALL_BUILTIN_FAST_WITH_KEYWORDS         38
+#define CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS  39
+#define CALL_NO_KW_BUILTIN_FAST                 40
+#define CALL_NO_KW_BUILTIN_O                    41
+#define CALL_NO_KW_ISINSTANCE                   42
+#define CALL_NO_KW_LEN                          43
+#define CALL_NO_KW_LIST_APPEND                  44
+#define CALL_NO_KW_METHOD_DESCRIPTOR_FAST       45
+#define CALL_NO_KW_METHOD_DESCRIPTOR_NOARGS     46
+#define CALL_NO_KW_METHOD_DESCRIPTOR_O          47
+#define CALL_NO_KW_STR_1                        48
+#define CALL_NO_KW_TUPLE_1                      56
+#define CALL_NO_KW_TYPE_1                       57
+#define COMPARE_OP_ADAPTIVE                     58
+#define COMPARE_OP_FLOAT_JUMP                   59
+#define COMPARE_OP_INT_JUMP                     62
+#define COMPARE_OP_STR_JUMP                     63
+#define EXTENDED_ARG_QUICK                      64
+#define FOR_ITER_ADAPTIVE                       65
+#define FOR_ITER_LIST                           66
+#define FOR_ITER_RANGE                          67
+#define JUMP_BACKWARD_QUICK                     72
+#define LOAD_ATTR_ADAPTIVE                      73
+#define LOAD_ATTR_CLASS                         76
+#define LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN       77
+#define LOAD_ATTR_INSTANCE_VALUE                78
+#define LOAD_ATTR_MODULE                        79
+#define LOAD_ATTR_PROPERTY                      80
+#define LOAD_ATTR_SLOT                          81
+#define LOAD_ATTR_WITH_HINT                     86
+#define LOAD_ATTR_METHOD_LAZY_DICT             113
+#define LOAD_ATTR_METHOD_NO_DICT               121
+#define LOAD_ATTR_METHOD_WITH_DICT             141
+#define LOAD_ATTR_METHOD_WITH_VALUES           143
+#define LOAD_CONST__LOAD_FAST                  153
+#define LOAD_FAST__LOAD_CONST                  154
+#define LOAD_FAST__LOAD_FAST                   158
+#define LOAD_GLOBAL_ADAPTIVE                   159
+#define LOAD_GLOBAL_BUILTIN                    160
+#define LOAD_GLOBAL_MODULE                     161
+#define RESUME_QUICK                           166
+#define STORE_ATTR_ADAPTIVE                    167
+#define STORE_ATTR_INSTANCE_VALUE              168
+#define STORE_ATTR_SLOT                        169
+#define STORE_ATTR_WITH_HINT                   170
+#define STORE_FAST__LOAD_FAST                  173
+#define STORE_FAST__STORE_FAST                 174
+#define STORE_SUBSCR_ADAPTIVE                  175
+#define STORE_SUBSCR_DICT                      176
+#define STORE_SUBSCR_LIST_INT                  177
+#define UNPACK_SEQUENCE_ADAPTIVE               178
+#define UNPACK_SEQUENCE_LIST                   179
+#define UNPACK_SEQUENCE_TUPLE                  180
+#define UNPACK_SEQUENCE_TWO_TUPLE              181
 #define DO_TRACING                             255
 
 #define HAS_ARG(op) ((((op) >= HAVE_ARGUMENT) && (!IS_PSEUDO_OPCODE(op)))\